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Fill in the missing commas and explain why you added them.
1. I like cooking, my family (,) and my pets.
If you don't add the commas, you like preparing your family and pets for food.
2. Let's eat, Grandma.
Without the comma you are having Grandma for dinner.
3. If you have two hours to kill, Sue, come and see us.
Without the commas you are killing Sue.
4. Most of the time, travellers are courageous souls.
If you don't add the comma, you believe that time travel is possible.
5. My sister, who lives in Toronto, is a police officer.
With the commas you are saying that you have one sister living in Toronto and that she is a police officer.
My sister who lives in Toronto is a police officer.
It's also possible not to add commas at all, in which case you have more sisters than just one. The one living
in Toronto is a police officer.